Eamonn Roche

Detective John Traveller (Peter Coyote) is convicted of the murder of his wife and her lover. His partner and friend, Detective Matthew Ransom, becomes very upset, affecting his marriage that was not working well. The lover of John's wife was the son of Luke Williams, a detective of the same department, and he does not accept the death of his son. After the trial and conviction of John, Matthew separates from his wife Mary Ramson, being sexually arrested by John's daughter Jude. Meanwhile, a serial killer kills the enemies of John, leaving clues in the crime scenes relatives to Sherlock Holmes tales and Matthew suspects of Jude.

真面目だけが取り柄の気弱な銀行員スタンリー。楽しみといえば往年のアニメを見ることくらいで、恋人もできずに冴えない日々を送っていた。そんなある夜、スタンリーは川で奇妙な仮面を見つける。自宅に持ち帰り顔に当ててみると、本人とは正反対のワイルドな男“マスク”に変身してしまう。風のように町へ飛び出した緑色の怪人“マスク”は、普段スタンリーを冷笑してきた人々に次々と仕返しをしていく。